CN109295415B

CN109295415B - Method for forming functional film layer, and antibacterial/anti-fingerprint element

Info

Publication number: CN109295415B
Application number: CN201710604997.5A
Authority: CN
Inventors: 黄育辉; 苏士豪; 蓝伟哲
Original assignee: Leader Optronics Technology Co ltd
Current assignee: Leader Optronics Technology Co ltd
Priority date: 2017-07-24
Filing date: 2017-07-24
Publication date: 2022-04-08
Anticipated expiration: 2037-07-24
Also published as: CN109295415A

Abstract

A film forming method of a functional film layer utilizes a physical co-plating mode to form a functional film layer which is formed by a first material to be plated and a second material to be plated and has antibacterial and anti-fingerprint characteristics on the surface of a base material, wherein the first material to be plated contains an antibacterial compound, and the second material to be plated contains an anti-fingerprint compound. In addition, the invention also provides a functional film layer which has antibacterial property and anti-fingerprint property at the same time, and an antibacterial anti-fingerprint element containing the functional film layer.

Description

Method for forming functional film layer, and antibacterial/anti-fingerprint element

Technical Field

The present invention relates to a film forming method, a polymer film layer, and an element having the functional film layer, and more particularly, to a film forming method for forming a functional film layer having both antibacterial and anti-fingerprint properties by a physical co-plating method, a functional film layer having both antibacterial and anti-fingerprint properties manufactured by the film forming method, and an antibacterial and anti-fingerprint element having the functional film layer.

Background

Many bacteria and viruses are latent in the daily environment, especially in the environment with a large population such as hospitals, public areas, schools, etc. In addition, the touch control products are used in large quantities and are easy to become hotbeds for propagation and propagation of microorganisms such as bacteria and viruses. Especially, the touch panel installed in the public place has a lot of users and extremely high use frequency, and is more likely to become a hotbed for propagation of bacteria or microorganisms.

Taking the touch panel as an example, since the touch is a user inputting instructions or operating by directly touching the surface of the panel, not only bacteria on the hand of the user will adhere to the surface of the panel due to the contact, but also dust or oil stain on the finger of the user will adhere to the surface of the touch panel, leaving a fingerprint or trace, thereby affecting the appearance or operation sensitivity of the touch panel.

Currently, the conventional antibacterial and/or anti-fingerprint treatment method is to make the material itself have antibacterial property, or form an antibacterial or anti-fingerprint coating on the surface of the contacted object by coating or dipping, so as to increase the antibacterial or anti-fingerprint property of the surface of the contacted object. For example, the continental patent CN 1262592C discloses a plastic film for keeping freshness of fruits and vegetables and a manufacturing method thereof, which is to mix resin, inorganic moisture-permeable agent, antibacterial agent and low-density polyethylene to obtain antibacterial polymer material, and then to use the antibacterial polymer material to manufacture the plastic film for keeping freshness of fruits and vegetables. In addition, the disclosure of the continental patent No. CN103172275A discloses that a silane coupling agent is first coated on a substrate to form a bonding layer, and then a nano-antibacterial material selected from zinc oxide, titanium dioxide, copper, gold, silver or clay is coated on the bonding layer to form an antibacterial layer, so that the surface of the substrate has an antibacterial effect.

Referring to fig. 1, in order to provide an object with both antibacterial and anti-fingerprint properties, WO20014084480a1 discloses forming an antibacterial layer 12 on a surface of a substrate 11, and then forming an anti-fingerprint layer 13 on the antibacterial layer 12. The antibacterial layer 12 comprises an amino-containing organic polymer carrier and an antibacterial metal, the anti-fingerprint layer 13 can also improve the binding property with the substrate 11 through the antibacterial layer 12, and the substrate 11 has anti-fingerprint and antibacterial functions through the antibacterial layer 12 and the anti-fingerprint layer 13. However, the above-mentioned methods need to be applied with the antibacterial layer 12 and the anti-fingerprint layer 13 respectively, which does not simplify the manufacturing process, and in addition, since the antibacterial layer 12 and the anti-fingerprint layer 13 are applied sequentially, the antibacterial property and the anti-fingerprint property of the object are most affected by the surface property of the object as known by those skilled in the art, and therefore, the above-mentioned antibacterial property is obviously affected by the anti-fingerprint layer 13 formed on the antibacterial layer 12. Therefore, providing the surface of the article with both antibacterial and anti-fingerprint properties is a positive effort for the related manufacturers.

Disclosure of Invention

The present invention is directed to a method for forming a functional film layer having both antibacterial and anti-fingerprint functions on a surface of an object.

The invention discloses a film forming method of a functional film layer, which comprises the steps of preparing a first material to be plated and a second material to be plated, and forming a functional film layer which is formed by the first material to be plated and the second material to be plated and has antibacterial and anti-fingerprint characteristics on the surface of a base material in a physical co-plating mode, wherein the first material to be plated comprises an antibacterial compound, and the second material to be plated comprises an anti-fingerprint compound.

Preferably, in the method for forming a functional film according to the present invention, the antibacterial compound is a polyamino siloxane compound, and the anti-fingerprint compound is a fluorine-containing polymer compound.

Preferably, the polyamino siloxane compound is obtained by hydrolysis and condensation of a reactive monomer having a aminosiloxane functional group, and has a molecular weight of 400 to 250000.

Preferably, the functional film layer of the present invention is formed by a method wherein the reactive monomer having aminosiloxane functional groups is selected from the group consisting of 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 2-aminoethyl-3-aminopropyltrimethoxysilane, triaminofunctionally propyltrimethoxysilane, bis [3- (triethoxysilyl) propyl ] amine, diaminoalkyl functional siloxanes, cationic anilino functional silanes, cationic vinylanilino functional silanes, 2-aminoethyl-3-aminopropylmethyldimethoxysilane, 3-aminopropylmethyldiethoxysilane, 3-ureidopropyltriethoxysilane, and combinations thereof.

Preferably, the first material to be plated further includes at least one metal atom or ion of ag, zn, cu, zr, ti, pt and au.

Preferably, the anti-fingerprint compound is at least one selected from a fluorine-containing polymer compound, a silicon-containing polymer compound, and a fluorine-containing and silicon-containing polymer compound.

Preferably, the functional film layer is formed by co-evaporation of the first material to be plated and the second material to be plated.

Preferably, the functional film layer has a film thickness between that of the functional film layer

To 1 μm.

In addition, another object of the present invention is to provide a functional film layer.

The functional film layer is prepared by the film forming method of the functional film layer, and the functional film layer has antibacterial property to at least one of escherichia coli and multi-resistant staphylococcus aureus.

Still another object of the present invention is to provide an antibacterial fingerprint-resistant member.

The antibacterial and anti-fingerprint element comprises a substrate and a functional film layer formed on the surface of the substrate, wherein the functional film layer is as described above.

The invention has the beneficial effects that: by using the physical co-coating method, a functional film layer having both antibacterial and anti-fingerprint functions can be simply formed on the surface of a substrate, and an antibacterial anti-fingerprint element having both antibacterial and anti-fingerprint characteristics on the surface can be obtained.

Drawings

FIG. 1 is a schematic diagram illustrating the structure of WO20014084480A 1;

FIG. 2 is a schematic diagram illustrating the structure of an embodiment of the present invention; and

fig. 3 is a schematic view illustrating a deposition apparatus for preparing the functional film layer of the present invention.

Detailed Description

Referring to fig. 2, an embodiment of the present invention includes a substrate 2 and a functional film layer 3.

The material of the substrate 2 is not particularly limited, and may be glass, polymethyl methacrylate (PMMA), Polyethylene (PE), polyvinyl chloride (PVC), Polycarbonate (PC), polyethylene terephthalate (PET), Polyimide (PI), polyvinylcyclohexane (polyvinylcyclohexane), amorphous polyethylene terephthalate (APET) composite material, polypropylene (PP), melamine-formaldehyde resin (melamine resin), ABS resin, a composite material of methyl methacrylate and polycarbonate, etc., and the shape of the substrate 2 is also not limited, and may be articles of various shapes formed by the aforementioned materials, or general display panels, such as: television panels, cell phone panels, and computer panels, etc.

The functional film layer 3 is formed by an antibacterial compound and an anti-fingerprint compound on the surface of the base material 2 in a co-plating mode, and has antibacterial property and anti-fingerprint property.

Wherein the antibacterial compound comprises a polyamino siloxane compound, and the fingerprint resisting compound comprises a fluorine-containing and/or silicon-containing high molecular compound.

Referring to fig. 2 and 3, the method for manufacturing the antibacterial and fingerprint-resistant device according to the embodiment of the present invention includes preparing a first material 201 to be plated and a second material 202 to be plated, and forming a functional film 3 having antibacterial and fingerprint-resistant properties on the surface of the substrate 2 by using a physical co-plating method, wherein the first material 201 to be plated includes an antibacterial compound, and the second material 202 to be plated includes an fingerprint-resistant compound.

In detail, the manufacturing method is to put the first material to be plated 201 and the second material to be plated 202 into a tungsten boat 101 of a chamber 100 for plating, and fix the substrate 2 to be plated on a fixing seat 102 above the tungsten boat 101.

Then, a functional film layer 3, which is composed of the first and

second materials

201 and 202 to be plated and has antibacterial and anti-fingerprint properties, is formed on the surface of the substrate 2 by physical film plating such as co-evaporation or co-sputtering, so as to obtain the antibacterial and anti-fingerprint element. The thickness of the functional film layer 3 may be determined as required

To

Or larger.

Specifically, taking co-evaporation as an example, the first and

second materials

201 and 202 to be plated and the substrate 2 are placed in the chamber 100 for plating, the first and

second materials

201 and 202 to be plated are respectively used as an antibacterial target and an anti-fingerprint target, and the vacuum of the chamber is controlledDegree of rotation<10^-2Under the torr condition, the first and second materials 201 and 202 (the antibacterial target and the anti-fingerprint target) to be plated are heated to be evaporated for Co-evaporation (Co-evaporation), so that the functional film layer 3, which is composed of the first material 201 and the second material 202 to be plated and has antibacterial and anti-fingerprint properties, is formed on the surface of the substrate 2.

As is known in the art, the antibacterial compound generally has hydrophilicity, while the anti-fingerprint compound has greater hydrophobicity, and the difference between the hydrophilicity and the hydrophobicity of the two materials is not compatible with each other, so that a coating layer having both antibacterial and anti-fingerprint properties cannot be formed in a conventional wet process, such as a coating method, because a uniformly mixed antibacterial and anti-fingerprint mixed solution cannot be obtained in a single coating liquid; if the antibacterial layer and the anti-fingerprint layer are formed in a stepwise manner as described in the background art (WO20014084480a1), the properties of the lower layer are affected by the coverage of the upper layer. The scheme utilizes a co-evaporation or co-sputtering mode to uniformly form two incompatible materials on the same film layer by utilizing the coating film, and the two incompatible materials are not mutually interfered, so that the defects that a single uniform film layer cannot be formed by a wet process in the prior art and the film layer has the antibacterial property and the fingerprint resistance at the same time can be solved.

More specifically, the first material 201 to be plated includes an antibacterial compound including a positively charged polyaminosiloxane compound.

Wherein, the reaction monomer with the aminosiloxane functional group of the positive charge is added with water or solvent with the water content of more than 0.001 percent, and the reaction monomer is hydrolyzed; adding acid liquor or alkali liquor to make the hydrolyzed reaction monomer undergo condensation reaction, after the reaction is completed, concentrating and drying so as to obtain the invented product. Or condensation and hydrolysis can be carried out firstly, and concentration and drying are carried out after the reaction is finished, so that the polyamino siloxane compound with positive charge can be obtained. That is, the reaction monomer having the aminosiloxane functional group may be subjected to hydrolysis reaction and condensation reaction, and the order of the reactions is not particularly limited.

In some embodiments, the hydrolysis reaction and the condensation reaction are carried out for at least 1 second at a temperature of 4 ℃ to 250 ℃.

In some embodiments, the positively charged polyaminosiloxane compound has a molecular weight of from 400 to 250000.

In some embodiments, the first material 201 may further include silica particles, and the silica particles are blended with the positively charged polyamino siloxane compound and dried to assist in dispersing the positively charged polyamino siloxane compound and increase the contact area. In addition, it should be noted that the silica particles are only carriers, and need to be controlled not to volatilize with the antibacterial material during the coating process.

More specifically, the aminosiloxane-functional group-containing reactive monomer may be selected from the group consisting of 3-aminopropyltrimethoxysilane (3-aminopropyltrimethoxysilane), 3-aminopropyltriethoxysilane (3-aminopropyltriethoxysilane), 2-aminoethyl-3-aminopropyltrimethoxysilane (2-aminoethyl-3-aminopropyltrimethoxysilane), triamino-functional propyltrimethoxysilane (triamino-functional propyltrimethoxysilane), bis [3- (triethoxysilyl) propyl ] amine (bis (3-triethoxysilylpropyl) amine), diaminoalkyl-functional siloxane (diamino-functional siloxane), cationic phenyl-functional silane (cationic amino-functional silane), cationic vinyl phenyl-amino-functional silane (cationic amino-2-dimethoxypropyl) amine (2-aminopropyl-3-aminopropyl-2-methyl-3-aminopropyl) amine (3-triethoxysilyl) amine), cationic vinyl phenyl-amino-functional silane (cationic amino-2-dimethoxyphenyl) amine, and cationic phenyl-amino-2-propyl-3-aminopropyl-3-aminoprophyl-3-amino-2-amino-2-propyl-amino-2-methyl-2-amino-2-amino-propyl-2-amino-2-amino-2-methyl-2-amino-2-amino-2-amino-one, and a-amino-one, and a-amino-one, or a-amino-one, and a-amino-one, or a-amino-one, or a-amino-one, and a-amino-one, or a-amino-one, or a mixture, or a, 3-aminopropylmethyldiethoxysilane (3-aminopropyltriethoxysilane), 3-ureidopropyltriethoxysilane (3-ureidopropyltriethoxysilane), or a combination of the foregoing.

In addition, in some embodiments, the first material 201 may also introduce antibacterial metal atoms or ions (e.g., silver, zinc, copper, zirconium, titanium, platinum, gold, etc.), which may be chelated with the positively charged polyaminosiloxane compound to form a stable antibacterial agent.

The second plating material 202 includes an anti-fingerprint compound selected from at least one of a fluorine-containing compound, a silicon-containing compound, and a fluorine-containing and silicon-containing compound, so that the functional film layer 3 has hydrophobic and oleophobic properties, thereby obtaining anti-fingerprint and anti-fouling properties.

The present invention utilizes an antibacterial compound and an anti-fingerprint compound as an antibacterial target material and an anti-fingerprint target material, respectively, and Co-evaporation (Co-evaporation) is performed on the antibacterial target material and the anti-fingerprint target material to obtain a functional film layer having both antibacterial and anti-fingerprint characteristics by one process. Not only can solve the disadvantages of the process operation caused by the incompatibility of the antibacterial and anti-fingerprint materials, but also has the characteristic of reducing the energy consumption in the process, unlike the conventional layered application.

The following embodiments and related test results are used to illustrate the fabrication of the antibacterial and anti-fingerprint element and the antibacterial and anti-fingerprint properties of the functional film layer according to the present invention.

Detailed description of the invention

Preparation of the first Material to be plated

Adding 3-aminopropyltrimethoxysilane (3-aminopropyltrimethoxysilane) to IPA (isopropyl alcohol) having a water content of 0.01%, and subjecting the reaction monomer to hydrolysis reaction (hydrolysis); and adding 0.1 wt% of nitric acid, performing condensation reaction (condensation) on the hydrolyzed reaction monomer, adding 1 wt% of zinc ions after the reaction is finished, concentrating, mixing with silicon dioxide (SiO2) particles, and drying to obtain the positively charged polyamino siloxane compound powder particles, thereby obtaining the first material to be plated.

The hydrolysis and condensation reaction time is 30min each, and the reaction temperature is normal temperature.

Second material to be plated

The second material to be plated is selected from commercially available fingerprint-resistant polymer materials (brand: TCD-030, manufacturer: SEKO Corp.)

Co-evaporation

Next, the first and second materials to be plated are respectively placed in the tungsten boat 101 of the evaporation chamber 100 shown in fig. 3, and a glass substrate to be plated is fixed on the fixing base 102. And then heating the first and second materials to be plated to evaporate, so as to form a functional film layer composed of the first and second materials to be plated on the surface of the glass substrate by a co-evaporation method, thereby obtaining the antibacterial and anti-fingerprint element with the functional film layer on the surface.

Evaporation conditions: vacuum 2X10^-5torr, chamber temperature: normal temperature, electrode current: 400 amperes, evaporation rate:

next, the antibacterial and anti-fingerprint element having the functional film layer prepared according to the embodiment was subjected to characteristic tests of durability, weather resistance, chemical resistance, antibacterial property, anti-fingerprint property, etc. to evaluate the characteristics and antibacterial and anti-fingerprint effects of the functional film layer of the present invention.

Fingerprint resistance characteristics:

the contact angle and the surface energy are indexes for measuring the hydrophilic and hydrophobic properties of the material, the size of the contact angle is related to the hydrophobicity of the surface, and when the contact angle of a substance and a water drop is larger, the hydrophobicity is higher, so that dirt and grease are not easy to adhere; the smaller the contact angle of a substance with a water droplet, the higher the hydrophilicity. In addition, as the Surface Energy (Surface Energy) is larger, the liquid adsorption capacity of the Surface is larger, the liquid adsorption area is larger, and the contact angle of the Surface is smaller, so that dirt and grease are easier to adhere. Therefore, the present invention represents the anti-fingerprint property of the functional film layer by measuring the water contact angle of the functional film layer.

Contact angle measurement

The antibacterial and fingerprint-resistant element prepared in the above-mentioned embodiment was measured for the contact angle of the functional film layer with water (repeated measurement 5 times) using a water drop angle meter as an experimental group (groups 1 to 5). And the contact angle of the glass substrate on which the functional film layer was not formed with water (measurement was repeated 5 times) was used as a control group (groups 1 to 5). The measurement results are summarized in Table 1 below.

TABLE 1

From the contact angle measurement results, the functional film layer has excellent hydrophobicity, and exhibits excellent anti-smudge and anti-fingerprint characteristics.

Antibacterial property test

Next, the antibacterial property test of the functional film layer of the antibacterial fingerprint-resistant element produced in the specific example was performed. The antibacterial property test was carried out according to JIS Z2801 standard film adhesion method. And the control group and the experimental group are respectively used for carrying out the treatment.

The experimental group selected Escherichia coli (Escherichia coli) among Gram-positive bacteria (Gram-positive bacteria) and multiply-resistant Staphylococcus aureus (MRSA) among Gram-negative bacteria (Gram-negative bacteria). Respectively coating escherichia coli and multi-resistance staphylococcus aureus with the concentration of 105CFU/ml on the surfaces of functional membrane layers of a plurality of antibacterial and anti-fingerprint elements, and then placing the antibacterial and anti-fingerprint elements in an environment with the temperature of 35 ℃ for incubation for 24 hours; after completion of the incubation, the dead E.coli and multi-resistant S.aureus were removed by washing with 50 ml of Sterile phosphate buffer (Sterilphosphate buffer), and the number of colonies forming on the panel (CFU/ml) surviving the experimental group was measured. The above-mentioned antibacterial measurements were repeated 10 times each to obtain 10 experimental groups of results.

The control group was performed by the same procedure as the experimental group except that the control group used a glass substrate, and escherichia coli and multi-resistant staphylococcus aureus were coated on the surface of the glass substrate, respectively, and the above-mentioned antibacterial measurements were repeated 10 times, to obtain 10 control group experimental results.

The antibacterial property measurement results of the control group and the experimental group are summarized in table 2.

TABLE 2

As can be seen from the results in table 2, the functional film layer obtained in this example has excellent anti-fingerprint properties and excellent antibacterial properties.

Then, a durability test is performed, and the antibacterial and anti-fingerprint element subjected to the durability test is subjected to contact angle and antibacterial property measurement by using the contact angle measurement and antibacterial property test method, so as to simulate and evaluate the antibacterial and anti-fingerprint performance of the antibacterial and anti-fingerprint element prepared in the specific example in actual use.

The durability test was performed in the following three ways.

1. Using #0000 steel wool, the surface of the test piece was rubbed with 200g of load for 1 time.

2. The test pieces were dry wiped 5000 times.

3. The test pieces were wet-wiped 5000 times.

The durability tests were performed in the control group and the test group, respectively, and each durability test method was repeated 3 times. The experimental group used the test piece prepared from the specific example, and the related experiments were all performed on the menu film layer, the control group used the glass test piece, and the related experiments were all performed directly on the surface of the glass test piece. The results of the tests on the antibacterial property and water contact angle of the antibacterial fingerprint-resistant element after the durability test are summarized in table 3.

TABLE 3

From the durability test results, it can be seen that the antibacterial property and the fingerprint resistance of the functional film layer prepared by the preparation method of the present invention can be maintained even without loss no matter the functional film layer is brushed, dry-wiped or wet-wiped, and the antibacterial property and the fingerprint resistance of the functional film layer of the present invention are both excellent in durability.

And then, performing a weather resistance test, and measuring the contact angle and the antibacterial property of the test piece subjected to the weather resistance test by using the contact angle measuring method and the antibacterial property test step to simulate and evaluate the antibacterial and anti-fingerprint performances of the antibacterial and anti-fingerprint element prepared in the specific example under different use conditions.

The weather resistance test was performed under the following three conditions:

group 1: the temperature is 90 ℃, the drying condition is adopted, and the testing time is 100 hours.

Group 2: temperature 40 ℃, relative humidity: 80 RH% and a test time of 120 hours.

Group 3: temperature 55 ℃, relative humidity: 93 RH%, test time 240 hours.

The weather resistance test was performed by using the control group and the test group, and each test method was repeated 3 times. The experimental group used the test piece prepared in the specific example, and the related experiments (contact angle and antibacterial property measurement) were performed on the menu film layer, the control group used the glass test piece, and the related experiments (contact angle and antibacterial property measurement) were performed directly on the surface of the glass test piece. The results of the tests on the test pieces after the post-resistance test were summarized in Table 4.

TABLE 4

From the table 4, the antibacterial property and the fingerprint resistance of the functional film layer after the weather resistance test are compared with the antibacterial property and the fingerprint resistance of the original antibacterial and fingerprint-resistant element without the weather resistance test (tables 1 and 2), and the antibacterial property of the functional film layer after the weather resistance test is hardly influenced; the fingerprint resistance (contact angle) was slightly decreased, but the contact angle was maintained at 103 degrees or more, and the fingerprint resistance was still exhibited at a considerable level.

In summary, the functional film layer of the present invention is obtained by using a positively charged polyamino siloxane compound and a fluorine-containing/and/or silicon-containing compound as an antibacterial target and an anti-fingerprint target, respectively, through a Co-evaporation (Co-evaporation) process in one step. The method not only can solve the defect of process operation caused by the incompatibility of material properties between antibacterial and anti-fingerprint materials, but also has the characteristics of reducing energy use in the process, directly forms the antibacterial and anti-fingerprint polymer material as a target material for coating, and has simple and easily controlled process; in addition, since the antibacterial property and the anti-fingerprint property of the functional film layer are the characteristics of the material itself, the surface of the element containing the functional film layer can maintain the antibacterial property and the anti-fingerprint property and has long-term effect, thereby the purpose of the invention can be achieved.

Claims

1. A method for forming a functional film layer, comprising: comprises the following steps: respectively preparing a first material to be plated and a second material to be plated, respectively using the first material to be plated and the second material to be plated as an antibacterial material and an anti-fingerprint material, and forming a functional film layer which is formed by the first material to be plated and the second material to be plated and has antibacterial and anti-fingerprint characteristics on the surface of a substrate by utilizing a physical co-plating mode, wherein the first material to be plated comprises an antibacterial compound formed by a polyamino siloxane compound, the polyamino siloxane compound is obtained by carrying out hydrolysis reaction and condensation reaction on a reaction monomer with an aminosiloxane functional group, the molecular weight is 400-250000, and the reaction monomer with the aminosiloxane functional group is selected from 3-aminopropyl trimethoxysilane, 3-aminopropyl triethoxysilane, 2-aminoethyl-3-aminopropyl trimethoxysilane, a metal oxide or a metal oxide, a metal oxide or a metal oxide, a metal oxide or a metal salt, a metal oxide or a metal salt, a metal oxide or a metal salt, a metal oxide or a metal, Triaminofunctional propyltrimethoxysilane, bis [3- (triethoxysilyl) propyl ] amine, diaminoalkyl-functional siloxane, cationic anilino-functional silane, cationic vinylanilino-functional silane, 2-aminoethyl-3-aminopropylmethyldimethoxysilane, 3-aminopropylmethyldiethoxysilane, 3-ureidopropyltriethoxysilane, or a combination of the foregoing; the second material to be plated comprises an anti-fingerprint compound, wherein the anti-fingerprint compound is at least one of a fluorine-containing high molecular compound, a silicon-containing high molecular compound and a fluorine-containing and silicon-containing high molecular compound.

2. The method for forming a functional film according to claim 1, wherein: the first material to be plated also comprises silicon dioxide particles, the fingerprint resisting compound is a fluorine-containing high molecular compound, and the silicon dioxide particles can not volatilize along with the antibacterial material in the physical co-plating process.

3. The method for forming a functional film according to claim 1, wherein: the first material to be plated also comprises at least one metal atom or ion of silver, zinc, copper, zirconium, titanium, platinum and gold.

4. The method for forming a functional film according to claim 1, wherein: the functional film layer is formed by co-evaporating the first material to be plated and the second material to be plated.

5. The method for forming a functional film according to claim 1, wherein: the film thickness of the functional film layer is between 10A and 1 μm.

6. A functional film layer characterized by: the functional film layer is produced by the method according to claim 1, and has antibacterial activity against at least one of Escherichia coli and multiply-resistant Staphylococcus aureus.

7. An antibacterial fingerprint-resistant member characterized by: comprises the following steps: a substrate, and a functional film according to claim 6 formed on the surface of the substrate.